A nurse is interested in whether there is a relationship between daily levels of stress and likelihood of a heart attack. The stress scores (predictor variable) and risk of heart attack values (criterion variable) from a small sample of participants are depicted below. (Values below are valid for this question only!)

Stress Score Risk of Heart Attack

(Higher values = more stress) (Higher values = greater risk)

6 6

2 4

6 0

3 2

Set up the regression equation and use to predict the risk of heart attack for a person with a stress score of 8. The risk of heart attack predicted for a person with a stress score of 8 is?